Correct a problem that was causing an apparent directory to be reported as a file instead of a directory by opendir.

This happened after adding these three new procfs entries:

  fs/block
  fs/mount
  fs/usage

Of course, there is no directory fs in this case, only three files that have fs/ in their relative pathnames.  The logic was detecting that fs was the name of the enty to report, but it was then declaring that fs was a file (because fs/block is of type file).

This was fixed by adding a check for matching lenghts.  i.e., if strlen(fs) != strlen(fs/block), then report fs as a directory instead of a file.

fs/procfs/fs_procfs.c

@@ -787,7 +787,13 @@ static int procfs_readdir(struct inode *mountpt, struct fs_dirent_s *dir)
               strncpy(dir->fd_dir.d_name, name, level0->lastlen);
               dir->fd_dir.d_name[level0->lastlen] = '\0';
 
-              if (entry->type == PROCFS_DIR_TYPE)
+              /* If the entry is a directory type OR if the reported name is
+               * only a sub-string of the entry (meaning that it contains
+               * '/'), then report this entry as a directory.
+               */
+
+              if (entry->type == PROCFS_DIR_TYPE ||
+                  level0->lastlen != strlen(name))
                 {
                   dir->fd_dir.d_type = DTYPE_DIRECTORY;
                 }